Systematic study of high-order harmonic optimal control by temporal pulse shaping of laser pulses

被引：8
|
作者：
Boyko, O. [1 ,2 ]
Valentin, C. [1 ]
Mercier, B. [1 ]
Coquelet, Ch. [1 ]
Pascal, V. [1 ]
Papalazarou, E. [1 ]
Rey, G. [1 ]
Balcou, Ph. [1 ,3 ]
机构：
[1] Ecole Polytech, CNRS, ENSTA, Lab Opt Applicat, F-91761 Palaiseau, France
[2] CNRS, UPR 20, Lab Photon & Nanostruct, F-91460 Marcoussis, France
[3] Univ Bordeaux 1, CNRS, CEA, Ctr Laser Intenses & Applicat, F-33405 Talence, France
来源：
PHYSICAL REVIEW A | 2007年 / 76卷 / 06期
关键词：
D O I：
10.1103/PhysRevA.76.063811
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We explore experimentally and numerically the physics underlying the optimization of high-order harmonic generation by intense laser pulses, whose temporal profile is tailored by a learning genetic algorithm. Based on a large set of optimization data obtained under different generation parameters, we show that the algorithm converges toward a class of very special profiles on the leading edge of the pulse. The behavior of the harmonic signal is then compared with theoretical simulations based on the time-dependent Schrodinger equation, allowing one to identify separately the role of microscopic and macroscopic phenomena in the temporal dynamics of high-harmonic generation and optimization.
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页数：8
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